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[SOLVED] Computer won't start back up after shut down

74708 Views 7 Replies 2 Participants Last post by  JimE
It has been almost 4 yrs since I built my computer so please bear with me as I have not been up on the newest trends.
I unplugged my tower to clean behind it and straighten out the wires. When I plugged everything back in the computer would not power up.
After numerous tries I left it alone for a few hours. Upon trying again it started up. I did not turn off for a few days. Upon restarting the computer it would power up but windows would not start up. It would hang up and not load windows.
After researching online I unplugged all USB plugs except mouse & key board. This allowed the computer to start up and load windows (XP). After plugging in all USB plugs everything would work but the printer.
After shutting down computer and restarting it would not power up. I checked PSU ok with paperclip jumper.
After looking on here I saw the suggestion about installing the reset wires to the power pins on the MB. This worked and computer started and windows loaded. I wanted to re-install windows XP with clean install but when I shut computer down it would not restart.

Do you think the issue is with the power/ rest buttons (or wires) or with MB pins for power wires? The MB is getting power (light on). When PSU jumped with DVD drive & fan plugged in they turn on.

Thank you

Computer – Built in March of 08
COOLER MASTER Centurion 5 CAC-T05-UW Black Aluminum Bezel , SECC
Chassis ATX Mid Tower Computer Case1
ASUS M2N32-SLI Deluxe Wireless Edition AM2 NVIDIA nForce 590 SLI
MCP ATX AMD Motherboard
Thermaltake W0106RU 700W Complies with ATX 12V 2.2 & EPS 12V version
SLI Certified 80 PLUS Certified Modular Active PFC Power Supply
AMD Athlon 64 X2 5000+ Brisbane 2.6GHz Socket AM2 65W Dual-Core
Black Edition Processor ADO5000DSWOF
EVGA 256-P2-N615-TX GeForce 7600GT 256MB 128-bit GDDR3 PCI
Express x16 SLI Support Video Card
Windows XP Home (SP3)
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Re: Computer won't start back up after shut down

Try using the power switch on the back of the power supply and see if it will then power up.

Aside from that, pull it apart and test. There is a guide here >
Re: Computer won't start back up after shut down

Not likely.

But again, try powering off the power supply (there is an off/on button on the power supply) the motherboard light go off, turn it back on, and THEN use the front panel switch.

If it will turn on every time after turnin the power supply off/on first, the power supply is bad.
Re: Computer won't start back up after shut down

Remove everything from the motherboard except for the cpu and heatsink. Test again. It should power up and give BEEP / ERROR codes. If it doesn't power on, its a motherboard or power supply fault.
Re: Computer won't start back up after shut down

Good luck.
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